Metrohm 787 KF Titrino - Manual (Page 37)

2.8 Result calculations
787 KF Titrino
33
Calculation formula and units
The calculation formulas are preset and depend on the selected mode.
Formula for the KFT mode
divisor smplsize
factor titer ) blank ) KFR ( volume (
) content ( water
Ч
Ч Ч −
=
Factor and divisor are used for the conversion of the result to different units.
Unit of result Sample size in... Factor
Divisor
% g 0.1 1
% mg 100 1
% ml 0.1 density of sample [g/mL]
ppm g 1000 1
ppm ml 1000 density of sample [g/mL]
ppm µl 1 density of sample [g/mL]
mg/ml g 1 density of sample [g/mL]
mg/ml ml 1 1
mg 1 1 1
ml 1 1 1000 * density H
2
O [g/mL] ≈ 1000
mg/pc pc 1 1
The unit of the result can be selected with the key, see the following page.
Formula for the titer determination modes TITER
) KFR ( volume
factor smplsize
titer
×
=
The factor is used to enter the water content of the standard.
Standard used
Sample size in... Factor
Water g 1000
Water µl density H
2
O [g/mL] ≈ 1
Methanol ml content of methanol [g/mL]
Methanol µl 0.001 * content of methanol [g/mL]
Na
2
Tart*2H
2
O g 156.6
Na
2
Tart*2H
2
O mg 0.1566